Page 1
2N5638
N-Channel Switch
• This device is designed for low level analog switchng, sample and hold
circuits and chopper stabilized amplifiers.
• Sourced from process 51.
2N5638
1
TO-92
1. Drain 2. Source 3. Gate
Absolute Maximum Ratings *
TC=25°C unless otherwise noted
Symbol Parameter Value Units
V
DG
V
GS
I
GF
T
, T
J
STG
* These ratings are limiting values above which the serviceability of any semiconductor device may be impaired.
NOTES:
1. These ratings are based on a maximum junction temperature of 150 degrees C.
2. These are steady state limits. The factory should be consulted on applications involving pulsed or low duty cycle operations.
Electrical Characteristics
Drain-Gate Voltage 30 V
Gate-Source Voltage -30 V
Forward Gate Current 50 mA
Operating and Storage Junction Temperature Range -55 ~ +150 °C
TC=25°C unless otherwise noted
Symbol Parameter Test Condition Min. Typ. Max. Units
Off Characteristics
V
(BR)GSS
I
GSS
I
D(off)
Gate-Source Breakdown Voltage VDS = 0, IG = -10µA-30 V
Gate Reverse Current VGS = -15V, VDS = 0 -1.0 nA
Drain Cutoff Leakage Current VDS = 12V, VGS = 15V 1.0 nA
On Characteristics
I
DSS
r
DS(on)
Zero-Gate Voltage Drain Current * VDS = 20V, IGS = 0 50 mA
Drain-Source On Resistance VGS = 0V, ID = 1.0mA 30 Ω
Small Signal Characteristics
r
ds(on)
C
iss
C
rss
Drain-Source On Resistance VDS = VGS = 0, f = 1.0kHz 30 Ω
Input Capacitance VDS = 0, VGS = 12V, f = 1.0MHz 10 pF
Reverse Transfer Capacitance VDS = 0V, VGS = 12V, f = 1.0MHz 4.0 pF
Switching Characteristics
t
d(on)
t
r
t
d(off)
t
f
* Pulse Test: Pulse Width ≤ 300µs, Duty Cycle ≤ 1.0%
Trun On Delay Time VDD = 10V, V
= -12, I
V
Rise Time 5.0 ns
Trun Off Delay Time 5.0 ns
GS(off)
R
G
= 50Ω
GS(on)
D(on)
= 0
= 12mA
4.0 ns
Fall Time 10 ns
Thermal Characteristics
TA=25°C unless otherwise noted
Symbol Parameter Max. Units
P
D
R
θJC
R
θJA
©2002 Fairchild Semiconductor Corporation Rev. A1, November 2002
Total Device Dissipation
Derate above 25°C
350
2.8
mW
mW/°C
Thermal Resistance, Junction to Case 125 °C/W
Thermal Resistance, Junction to Ambient 357 °C/W
Page 2
Package Dimensions
0.46
±0.10
4.58
+0.25
–0.15
2N5638
TO-92
±0.20
4.58
±0.40
1.27TYP
[1.27
±0.20
3.86MAX
±0.10
1.02
+0.10
–0.05
0.38
14.47
1.27TYP
]
3.60
±0.20
[1.27
±0.20
]
0.38
+0.10
–0.05
(0.25)
(R2.29)
Dimensions in Millimeters
©2002 Fairchild Semiconductor Corporation Rev. A1, November 2002
Page 3
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2
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®
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C™
I
Across the board. Around the world.™
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®
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FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY
PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY
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NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.
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FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF FAIRCHILD SEMICONDUCTOR
CORPORATION.
As used herein:
1. Life support devices or systems are devices or systems
which, (a) are intended for surgical implant into the body,
or (b) support or sustain life, or (c) whose failure to perform
when properly used in accordance with instructions for use
provided in the labeling, can be reasonably expected to
result in significant injury to the user.
2. A critical component is any component of a life support
device or system whose failure to perform can be
reasonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.
PRODUCT STATUS DEFINITIONS
Definition of Terms
Datasheet Identification Product Status Definition
Advance Information Formative or In
Design
Preliminary First Production This datasheet contains preliminary data, and
No Identification Needed Full Production This datasheet contains final specifications. Fairchild
Obsolete Not In Production This datasheet contains specifications on a product
©2002 Fairchild Semiconductor Corporation Rev. I1
This datasheet contains the design specifications for
product development. Specifications may change in
any manner without notice.
supplementary data will be published at a later date.
Fairchild Semiconductor reserves the right to make
changes at any time without notice in order to improve
design.
Semiconductor reserves the right to make changes at
any time without notice in order to improve design.
that has been discontinued by Fairchild semiconductor .
The datasheet is printed for reference information only.
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